Question

我正在尝试自动使用硒下载文件。为此，我想设置默认的下载目录并禁用下载提示。它似乎没有用，我正在传递的选项似乎都没有注册。以下是我如何创建浏览器的示例。有人知道发生了什么吗？

chromedriver = 'PATH/TO/chromedriver'

download_fp = './testPrismaDownload/'
prefs = {
    "download.prompt_for_download" : False,
    "download.default_directory": download_fp
}

options = webdriver.ChromeOptions()
options.binary_location = '/usr/bin/google-chrome-stable'
options.add_argument('--headless')
options.add_argument('--no-sandbox')
options.add_argument('--disable-gpu')
options.add_argument('--disable-setuid-sandbox')
options.add_experimental_option('prefs', prefs)

# i've tried various combinations of `options`, `chrome_options` (deprecated) and `desired_capabilities`
browser = webdriver.Chrome(options=options, desired_capabilities=options.to_capabilities(), executable_path=chromedriver)

我指定的选项中没有一个出现在browser.capabilities或browser.desired_capabilities中。例如，功能中chromeOptions的密钥为goog:chromeOptions': {'debuggerAddress': 'localhost:42911'}。

当我执行download_button.click()时，命令会成功，但不会下载任何内容。我还在没有--headless选项的mac笔记本电脑上尝试了此操作，当我单击下载按钮时，浏览器会打开下载对话框，提示您进行下载确认。

任何帮助/经验将不胜感激。

Python 3.6.6 :: Anaconda，Inc。

硒'3.141.0'

Linux 9725a3ce7b7e 4.9.125-linuxkit＃1 SMP Fri Sep 7 08:20:28 UTC 2018 x86_64 x86_64 x86_64 GNU / Linux

Answer 1

出现了一个问题：https://github.com/SeleniumHQ/selenium/issues/5722

很简单。在您的驱动程序的切换窗口之后，调用此启动器函数：

 def enable_download_in_headless_chrome(driver, download_dir):
    # add missing support for chrome "send_command"  to selenium webdriver
    driver.command_executor._commands["send_command"] = ("POST",'/session/$sessionId/chromium/send_command')
    params = {'cmd': 'Page.setDownloadBehavior', 'params': {'behavior': 'allow', 'downloadPath': download_dir}}
    command_result = driver.execute("send_command", params)

expected_download = 'ur/download/path'
opt = Options()
opt.add_experimental_option("prefs", { \
    'download.default_directory': expected_download,
     'download.prompt_for_download': False,
     'download.directory_upgrade': True,
  })
opt.add_argument('--headless')
opt.add_argument('--window-size=1920,1080');

login_page = "https://www.google.com"
driver = webdriver.Chrome(options=opt)
driver.implicitly_wait(5)
driver.get(login_page)
driver.maximize_window()

#On below click you will be in new tab
scoresheet_tab = driver.find_element_by_xpath("//*[@class='sideNav-item is--scoresheet']").click()

instances = driver.window_handles
driver.switch_to.window(instances[1]) # this is the new browser
#this below function below does all the trick
enable_download_in_headless_chrome(driver, expected_download)

硒Chrome浏览器的选项和功能

1 个答案: